32results about How to "No edge warping" patented technology

The invention belongs to the technical field of multifunctional protective materials and discloses a multifunctional protective material with high-pressure water-jet-cutting resistance and hydrofluoric-acid etching resistance and a preparation method and application thereof, especially for the machining fields of cover plates, touch screens and shells of mobile phones. The multifunctional protective material comprises the following components in parts by weight: 40-70 parts of phenolic epoxy acrylate resin, 10-30 parts of an active diluent, 2-6 parts of a photoinitiator, 10-30 parts of filler, 1-3 parts of an adhesion promoter and 0.2-1.0 part of a defoaming agent. The multifunctional protective material disclosed by the invention has the advantages that by silk-screen printing or spraying and UV curing, the obtained coating layer shows excellent adhesion on glass or metal substrates, so that the phenomena of hollowing, edge warping, dropping and the like in the processes of water-cutting scribing and CNC (Computer Numerical Control) carving process can be avoided; hydrofluoric acid with the concentration of 20% can be resisted for more than 30 minutes, so that the requirement for the protective performance can be met; due to use of environmental-friendly film dropping water, no residual film is left, and pieced dropping is achieved in film dropping; and the separation is easy, the automation degree of the process is high, and safe and environmental-friendly effects are achieved.

The invention relates to the technical field of protective films, in particular to a production process of a polyethylene (PE) protective film. The PE protective film produced by the production process has high/low temperature resistance, reduces the phenomenon of warping during use, can avoid the phenomenon of degumming during peeling, and is convenient to peel. A preparation method comprises thefollowing steps of S1, film blowing: melting and plasticizing a plastic raw material in an extruder, extruding the plastic raw material into a film tube through an annular die head, and blowing, cooling and sizing the film tube with compressed air to form a PE film; S2, preparation of a pressure-sensitive adhesive: mixing water-based acrylic acid and cross-linked polyacrylic acid, adding the mixture into a fuse machine, melting and stirring the mixture uniformly to obtain an adhesive; S3, glue coating: uniformly coating the surface of the PE film with the adhesive by a coating machine; S4, curing treatment: curing the PE film coated with the adhesive by ultraviolet light irradiation; S5, irradiation cross-linking modification treatment: performing cross-linking modification treatment on asemi-finished product obtained after curing; S6, winding; and S7, slitting.

The invention provides a novel thermal contraction film slitting device of a swing structure. The slitting device comprises a rolling shaft, constant speed rollers, positioning rollers, a power roller, a detection roller, a CCD sensor, an enabling roller, a rolling-out roller, an unrolling and deviation rectification execution mechanism and a swing device. The rolling shaft, the constant speed rollers, the positioning roller (4), the power roller, the detection roller, the CCD sensor, the enabling roller, the rolling-out roller and the unrolling and deviation rectification execution mechanism are connected in sequence; the swing device comprises a driving system, a sleeve, a breather pipe, a cutting knife arm, slitting knife blades, a cutting knife arm fixing track and a cylinder, the slitting knife blades are fixed on the cutting knife arm which moves on the cutting knife arm fixing track, one end of the cutting knife arm fixing track is in sliding contact with the driving system of the swing device, and the other end of the cutting knife arm fixing track is connected with the cylinder; the driving system comprises a frequency converter, the frequency converter controls a servo motor and is combined with an eccentric wheel through a driving shaft, and when the eccentric wheel rotates, the cutting knife arm fixing track (14) making contact with the eccentric wheel does reciprocating motion because of changes of the rotation radius; a thermal contraction film penetrates through the slitting knife blades and is slit between the positioning rollers.

The invention discloses a FDM (fused deposition modeling) 3 D (three dimensional) printing cold plate molding resin membrane which has a thickness of 50-250mum, and comprises a hot melt layer, a base layer and a non-setting adhesive layer, the thickness ratio of hot melt layer to base layer to non-setting adhesive layer is 17-23:17-23:9-11; the hot melt layer is ethylene-vinyl acetate copolymer; the base layer contains high density polyethylene (75-85wt%), linear low density polyethylene (5-15wt%) and calcium carbonate (1-10wt%); the non-setting adhesive layer is an oily non-setting adhesive. The FDM (fused deposition modeling) 3 D (three dimensional) printing cold plate molding resin membrane has the advantages of low cost, when in use, a baseplate with a smooth and flat surface is required, and special requirements on the texture are not required. The problem of high cost of traditional 3D printing baseplates and adhesive films can be solved, and the problems of low safety and large machine loss caused by heating of the baseplates can be solved. In addition, the FDM (fused deposition modeling) 3 D (three dimensional) printing cold plate molding resin membrane is not only suitable for printing small-sized items, but also suitable for printing large-sized items (with the length, width and height up to 500mm), and edge warping problem may not be produced when in printing of the large-sized items.

An externally-applied patch relates to an externally-applied patch, which is composed of nonwoven (1), automatic thermostat heater (2), hydrogel transdermal ointment (3) and plastic film (4). The nonwoven (1) and the automatic thermostat heater are tightly connected, the hydrogel transdermal ointment is coated on the back line of the nonwoven, the automatic thermostat heater is arranged in the middle, and the surface of the hydrogel transdermal ointment (3) is covered with the plastic film. The present invention makes the hydrogel transdermal ointment enable to play medical action for a long time at a certain temperature by the continuous heating of the automatic thermostat heater, thereby reducing the effective time of the medicine, and improving the effect of medicine absorption; and thepresent invention has the advantages of convenient and comfortable use, large drug loading, strong penetrability, easy absorption, no residue, and no contaminated clothing.

The invention discloses a novel mask capable of adjusting the length of ear ropes. The mask comprises a mask body and a fixing block. A protective edge is sewn on the lower side of the mask body; a nose strip is arranged on the upper side of the mask body; limiting non-woven fabric is sewn in the mask body, a protective strip is sewn on the outer side of the limiting non-woven fabric; a filter element is installed in the limiting non-woven fabric, a pressing block is arranged on the back face of the mask body, a clamping block is arranged on the front face of the pressing block, the fixing block is fixedly connected to the front face of the clamping block, a coil is connected to the back face of the fixing block through a bearing, and a rotating block is fixedly connected to the front faceof the coil. By arranging a pull rod and a telescopic spring, a user can conveniently adjust the length of the ear ropes according to own requirements and can be well attached to the face of the user, and by arranging the limiting non-woven fabric and the protective strip, the filter element can be conveniently replaced, and the operation is easy.

The invention discloses an adhesive scraping device for assisting in wallpaper mounting and an adhesive scraping method, and aims to solve the technical problems that in the prior art, a large amountof adhesive is stripped from a wall in an adhesive scraping process in the wallpaper mounting process, and edge warping is prone to occurring at a wallpaper joint after long-term use due to insufficient adhesive. The adhesive scraping device comprises a pre-arranging groove member and an adhesive scraping member. The pre-arranging groove member comprises a frame, a vertical sliding rod and a horizontal sliding rod; the two ends of the vertical sliding rod are separately movably sleeved with an upper connecting rod and a lower connecting rod of the frame; the upper connecting rod and the lowerconnecting rod are each provided with a limiting assembly for positioning the vertical sliding rod; the two ends of the horizontal sliding rod are separately movably sleeved with a left connecting rodand a right connecting rod of the frame; a vertical sliding groove is formed in the vertical sliding rod along the length direction of the vertical sliding rod; a horizontal sliding groove is formedin the horizontal sliding rod along the length direction of the horizontal sliding rod; and a groove forming part is movably connected at the intersection point of the vertical sliding groove and thehorizontal sliding groove. The adhesive scraping member comprises a scraping plate used for scraping and leveling a wallpaper splicing seam, and an adhesive storage opening is formed in a scraping blade, for leveling adhesive on wallpaper, of the scraping plate.

The invention discloses a circular screen printer device with an antiskid roller. The circular screen printer device comprises a circular screen and a printing conduction band and further comprises a long-strip-shaped trough arranged below the circular screen and the printing conduction band. Fixed frames are fixedly connected to the outer sides of the two ends of the long-strip-shaped trough in the longitudinal direction correspondingly. The fixed frames are fixed to a first vertical pillar and a second vertical pillar which are vertically arranged correspondingly. A roller printing device is fixed to the first vertical pillar and the second vertical pillar. The two ends of the roller printing device are rotationally connected with the first vertical pillar and the second vertical pillar correspondingly. The roller printing device is of a step type. The two ends of the roller are each provided with a small segment of step. The diameter of the middle area segment of the roller is larger than that of the area segments of the two ends of the roller. An antiskid structure used for increasing friction force is arranged on the part, located in the milled area segment, of the outer surface of the roller. The antiskid structure is antiskid lines formed on the outer surface of the roller printing device. The circular screen printer device is simple and reasonable in structure and ingenious in design concept.

The invention discloses a humidity sensitive capacitor manufacturing method. The method comprises the steps of obtaining a substrate, manufacturing a bonding pad and mutually crossed comb finger electrodes on the upper surface of the substrate by adopting an electroplating process, and manufacturing humidity sensitive layers on the upper surface and the side face of the comb finger electrode to obtain a humidity sensitive capacitor, wherein the thickness of the humidity sensitive layer is greater than that of the comb finger electrode. According to the invention, the comb finger electrodes are manufactured in an electroplating mode, the electroplating process is a thick film metal process, the thickness of the comb finger electrodes can be larger than 1 micrometer, the thickness of the comb finger electrodes is increased, the opposite area between the crossed comb finger electrodes is increased so as to increase the basic capacitance and the capacitance variation of the humidity sensitive capacitor, improve the capacitance sensitivity and reduce the design difficulty of the humidity-sensitive capacitance detection circuit, and the manufacturing cost can be reduced through the electroplating mode. The invention further provides a humidity sensitive capacitor and humidity measuring equipment with the advantages.

The invention relates to the technical field of adhesives, in particular to environmentally friendly jelly glue and a preparation method thereof. The environmentally friendly jelly glue comprises thefollowing raw materials in parts by weight: 15-20 parts of gelatin, 7-15 parts of konjaku flour, 8-12 parts of carragheen, 8-15 parts of an oxidizing agent, 3-5 parts of a penetrating agent, 1-2.5 parts of a defoaming agent, 1-3 parts of an antioxidant, 0.2-1 part of a water-retaining agent, 1-2 parts of soluble metallic salt, 1-6 parts of a pH adjusting agent and 35-50 parts of water. The viscosity of the environmentally friendly jelly glue at the temperature of 60 DEG C is 900-1100 cps, a product produced by the environmentally friendly jelly glue can resist edge warping within 200-400 h inan environment at the temperature of 40-50 DEG C, and glue failure can be avoided within 200-350 h in an environment with the humidity of 90%-95%.

The invention discloses a preparation method of a laminated board for a wood floor. The preparation method comprises the following steps: (1) sorting a base board and a panel; (2) preparing an adhesive, wherein the adhesive is prepared from the following raw materials in parts by weight: 90-95 parts of urea-formaldehyde resin; 15-20 parts of polyvinyl acetate; 1-2 parts of a titanate coupling agent; 0.5-1 parts of chlorinated olefin; 0.1-0.5 parts of a retarding agent; 0.5-1 parts of a curing agent; 10-15 parts of a filling agent. The preparation method comprises the following steps: mixing and stirring the raw materials until the glue solution is pasty viscous liquid; (3) performing gluing; (4) performing veneering; (5) performing pressing; (6) performing trimming and edge sawing; and allowing the pressed wood board to be subjected to surface finishing, performing edge sawing according to the required specification to obtain the laminated board. The laminated board for the wood floorprepared through adoption of the method has high bonding strength, and it is guaranteed that the edge warping phenomenon does not occur in the using process.

The invention provides environment-friendly processing equipment for thermal insulation ceramic tiles, relates to the technical field of ceramic tile processing, and solves the problems that in the actual application process of existing ceramic tile processing equipment, dust generated during processing cannot be collected when ceramic tiles are cut; in order to solve the problems that a large amount of dust is generated during cutting, so that environmental pollution is caused by a large amount of dust generated during cutting, and in addition, ceramic tiles cannot be always guided in the forward direction in the cutting process, so that the ceramic tiles are damaged due to cutting deflection, the tile cutting device comprises two forward mechanisms, and the number of the forward mechanisms is two. A pressing plate and a pulley move downwards to efficiently clamp a ceramic tile through the pulley, the design can ensure that the situation that the edge of the ceramic tile is warped due to uneven stress when the ceramic tile is cut is avoided, and after the ceramic tile moves to the position under a support in a dust removal mechanism, a cutting blade is driven through a motor B; and therefore, efficient cutting operation can be conducted on the ceramic tiles.

The invention discloses a PE protection film production process, which comprises the following steps: S1, raw material preparation: preparing the following raw materials in parts by weight: 90 to 150 parts of low-density polyethylene, 2 to 5 parts of a thermoplastic elastomer, 8 to 18 parts of PE nano zinc oxide master batch, 0.8 to 1.6 parts of an ultraviolet absorbent, 0.8 to 1.6 parts of an UV antioxidant, 0.6 to 1.6 parts of an UV stabilizer, 10 to 24 parts of a dendritic toughening agent, 8 to 24 parts of an allyl elastomer, 10 to 20 parts of water-based acrylic acid and 30 to 60 parts of cross-linked polyacrylic acid; S2, base layer preparation; S3, adhesive preparation; S4, coating with an adhesive; S5, protection layer preparation; S6, coating with a protection layer: coating the surface of an adhesive on one side of a base layer with a protection layer by using a coating machine; S7, pressing and curing treatment; and S8, irradiation crosslinking modification treatment. According to the invention, a protection layer is laminated on the surface of a base layer through an adhesive, so that the ultraviolet resistance and the scratch resistance of the PE protection film are improved, and the PE protection film has relatively high dust and gravel impact resistance.

The invention provides a method for preventing overflow of a hot melt adhesive. The method comprises the following specific steps: (1) carrying out heating hot melting on hot melt adhesive to melt the adhesive; (2) controlling the temperature of the hot melt adhesive to be constant by using a temperature controller, coating molten hot melt adhesive to a to-be-pasted label, wherein a blank edge of 0.3-0.7mm is reserved at the edge of the label; and (3) operating a labeling machine to complete a labeling procedure. According to the method, due to specific edge reserving distance and selection of the hot melt adhesive, the phenomenon of edge warping can be avoided while realizing zero overflow of the adhesive during an operation, and therefore, the method is suitable for meeting the requirements of large-scale industrial production.

The invention discloses a waterborne PP straight surface sticker and a manufacturing process thereof. The waterborne PP straight surface sticker is composed of a base material, a coating, glue, a bottom layer and a release paper, wherein the coating is uniformly applied onto the lower surface of the base material, one surface of the bottom layer is adhered to one surface of the coating, the othersurface of the bottom layer is coated with the glue to form a glue layer, and the release paper is adhered to the glue layer. By improving the formula and the manufacturing method of the straight surface sticker, the properties of the straight surface sticker can be improved, the manufactured straight surface sticker can be structurally compact among layers and less prone to loosening and deformation during application, meanwhile, the glue layer is high in viscosity and less prone to falling off during application, so that the waterborne PP straight surface sticker has a broad market space.